Photo-stimulated luminescence in SrAl2O4:Eu2+,Dy3+ single crystal fibers

Jia, Wei; Yuan, Huang; Holmstrom, Scott A.; Liu, H; Yen, W. M.

doi:10.1016/s0022-2313(99)00145-3

Cited by 64 publications

(40 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CDy 3C [7,8] or glasses prepared under a strong reducing environment [9,10] or were treated under an extreme ambience, e.g. irradiated by an infrared femtosecond laser or under high pressure [11].…”

Section: Cmentioning

confidence: 99%

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Qiu

Igarashi

Makishima

2005

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

Mn 2C-doped GeO 2 -B 2 O 3 -ZnO (GBZ) glasses were investigated and developed as long-lasting phosphorescence host materials. Transparent glass-ceramics were obtained after heat-treated at the first crystallization temperature for 20 min. By X-ray diffraction measurement and SEM observation, it is clarified that Zn 2 GeO 4 crystallites with a diameter of about 1 mm precipitate on the sample's surface after heat-treatment. An orange long-lasting phosphorescence from Mn 2C was observed in the 25GeO 2 -25B 2 O 3 -50ZnO glass matrix, however, a stronger long-lasting green phosphorescence was observed in the phase of Zn 2 GeO 4 crystallites. This phenomenon is considered to be due to the different ligand field environment surrounding Mn 2C ions in the glass and the glass-ceramics. A possible mechanism for the long-lasting phosphorescence in the Mn 2C -doped glass was discussed.

show abstract

Section: Cmentioning

confidence: 99%

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Qiu

Igarashi

Makishima

2005

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

show abstract

“…Many researchers try to install certain defects into crystalline and glass materials to control the decay time of long-lasting phosphorescence. Numerous practical materials have been developed, which an emission is strong enough to be observed by naked eyes for a time period exceeding 8 h. So far, long-lasting phosphorescence phenomena have been observed in rareearth ions doped polycrystalline [7,8] and glasses which were prepared under strong reduction environment [9 -11] or were treated by an infrared femtosecond laser [12,13]. In this paper we report that a long-lasting phosphorescence phenomenon was observed in a Sn 2þ -Cu 2þ co-doped silicate glass without any special treatment.…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet-radiation-induced structure and long-lasting phosphorescence in Sn^2þ—Cu^2þco-doped silicate glass

Qiu

Makishima

2003

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

We report the relaxation of ultraviolet-radiation-induced structure and long-lasting phosphorescence in Sn 2þ -Cu 2þ co-doped glass with composition of 70SiO 2 ·20Na 2 O·10CaO·0.05CuO·0.05SnO in mol ration. After irradiation by an ultraviolet lamp ðl max ¼ 254 nmÞ with a power density if 5 mW/cm 2 for 30 min, a visible light peaking at 510 nm could be observed with the naked eyes in the dark after the removal of the activating light. Thermostimulated luminescence glow curves and electron-spin-resonance spectra were measured. We suggest that the long-lasting phosphorescence in the Sn 2þ -Cu 2þ co-doped glass samples resulted from the recombination of electrons and holes at shallow traps in the glass matrix that can be thermally released at room temperature. q

show abstract

“…However, these mechanisms gave the initial idea to the present studies : the mechanisms published proposed the formation of single valent Eu+ and tetravalent Nd 4+ and/or D/+ [30][31][32][33][34] -or, at least, the presence of their virtual counterparts as charge transfer states and excited 5d electron configurations. The presence of the Eu+ or Nd 4+ (and/or D/ +) species in ambient conditions and in oxide materials is, however, not acceptable and the suggested reduction of Eu 2+ to Eu+ (and oxidation of Nd 3+lDl+ to Nd4+ID/+) would require tremendous amounts of energy .…”

Section: Persistent Luminescence Of Mal Z0 4 :Eu Z +mentioning

confidence: 99%

“…Accordingly, no general agreement has been achieved on the detailed mechanisms involved and several interesting and even exciting mechanisms have been proposed. Especially, the mechanisms resulting in the prolonged and enhanced afterglow when R 3+ ions have been introduced into MAl z0 4 :Eu z+ as co-dopants, are either ignored or are contradictory [30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Persistent Luminescence Materials

Aitasalo¹,

Hölsä²,

Krupa³

et al. 2003

Physics of Laser Crystals

View full text Add to dashboard Cite

Abstract. The luminescent efficiency of rare earth ions is usually drastically lowered when defects are present in the host lattice. Persistent luminescence is the most recent rare earth application based on lattice defects. Typical materials are the Eu + ions as codopants enhance greatly the duration and intensity of persistent luminescence. As a result of very slow thermal bleaching of the excitation energy from the lattice defects acting as traps, the new persistent luminescent materials yield luminescence still visible to naked eye for more than ten hours. Despite the seemingly simple stoichiometry and structure of these materials, the determination of persistent luminescence mechanism(s) presents a very complicated problem. This report~resents in detail some of the factors affecting the luminescence properties of the Eu +,R 3 + doped MAIz0 4 • The possible mechanisms involved with different defect centers and interactions between them and the emitting Eu 2 + ion are discussed based on the results of systematic investigations carried out on the preparation, composition, structure and different luminescence properties.

show abstract

Photo-stimulated luminescence in SrAl2O4:Eu2+,Dy3+ single crystal fibers

Cited by 64 publications

References 8 publications

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Ultraviolet-radiation-induced structure and long-lasting phosphorescence in Sn^2þ—Cu^2þco-doped silicate glass

Persistent Luminescence Materials

Contact Info

Product

Resources

About

Photo-stimulated luminescence in SrAl2O4:Eu2+,Dy3+ single crystal fibers

Cited by 64 publications

References 8 publications

Long-lasting phosphorescence in Mn2+:Zn2GeO4crystallites precipitated in transparent GeO2–B2O3–ZnO glass-ceramics

Long-lasting phosphorescence in Mn2+:Zn2GeO4crystallites precipitated in transparent GeO2–B2O3–ZnO glass-ceramics

Ultraviolet-radiation-induced structure and long-lasting phosphorescence in Sn2þ—Cu2þco-doped silicate glass

Persistent Luminescence Materials

Contact Info

Product

Resources

About

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Long-lasting phosphorescence in Mn²⁺:Zn₂GeO₄crystallites precipitated in transparent GeO₂–B₂O₃–ZnO glass-ceramics

Ultraviolet-radiation-induced structure and long-lasting phosphorescence in Sn^2þ—Cu^2þco-doped silicate glass